nBanks/nWays error when compiling Gemmini

[hchenji]

Using chipyard 1.8.0 and gemmini 0.6.4, I get this error when I run build-vcs or build-verilator!

[error] <redacted>/chipyard/generators/chipyard/src/main/scala/config/GemminiSoCConfigs.scala:13:11: parameter 'nWays' is already specified at parameter position 1
[error] Note that 'nBanks' is not a parameter name of the invoked method.
[error]     nWays = 8,
[error]           ^
[error] one error found
[error] (Compile / compileIncremental) Compilation failed

[jerryz123]

0.6.4 is an older release that is not compatible with 1.8.0.

More specifically, the CustomSoCConfigs file in Gemmini should be updated to reflect API changes in 1.8.0.

[hngenc]

For Gemmini 0.6.4, you should be using Chipyard's 117624d8eea27bafd613eec09e9b9b3e31239e08 commit (as in the CHIPYARD.hash file)

Was there as specific reason why you wanted Chipyard 1.8.0? If so, one easy way to use it might by to just remove the nBanks option from CustomSoCConfigs.scala, since the error message implies that the option no longer exists in newer versions of Chipyard

[hanyax]

Hey, I am also trying to build this on Chipyard/FireSim, looks like there is a compatibility issue where I need Chipyard 18.0 and FireSim 14.2 to run on the new AWS FPGA AMI but Gemmini does not support Chipyard 18.0?

[isbord]

Hi,

If this can help, I did similar test with Chipyard 1.8.1 and Gemmini 0.6.4 and, of course, had exactly the same problem. I therefore commented lines 12 & 13 of generators/chipyard/src/main/scala/config/GemminiSoCConfigs.scala:

 10   new freechips.rocketchip.subsystem.WithInclusiveCache(
 11     //nBanks = 1,
 12     //nWays = 8,
 13     capacityKB = 512,
 14     outerLatencyCycles = 40
 15   ) ++

and now, I successfully pass the mobilenet test (./scripts/run-verilator.sh mobilenet)

[hngenc]

The latest release of Gemmini on the master branch (tagged v0.7.0) is compatible with Chipyard 1.8. Hope that fixes your problems